So, what does it mean that Barbados will remain a part of the Commonwealth?
Not a ton. It means that it'll have the same status as places like India and Kenya. The Queen or a future British monarch will have a certain extra diplomatic cachet if/when he or she visits there, but that's about it.
The only major former British colonies that aren't Commonwealth members are the US and Ireland, which of course both parted ways with the UK in unusually dramatic and violent ways.
Egypt, Israel, Jordan, Iraq, The Gulf states and Burma among others might object to the idea that they weren’t major colonies
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